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(No Model.) 2 Sheets -'Sheet 1. M. A. TYLER 85 H. D. STONE. HEEL TRIMMING MACHINE.

No. 252,819. Patented Ja.11.24,1882.

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M. A. TYLER & H. D. STONE.

HEEL TRIMMING MACHINE.

Patented Jan. 24,1882;

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NITED TATES ATENT' heron.

MERRILL A. TYLER, OF ROOKLAND, AND HENRIE D. STONE, OF BOSTON, MAS- SAOHUSETTS, ASSIGNORS TO THE TYLER MANUFACTURING COMPANY,

OF PORTLAND, MAINE.

HEEL-TRIMMING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 252,819, dated January 24., 1882.

- Application filed November 19, 1881.

To all whom it may concern:

Be it known that we, MERRILL A. TYLER, of Rocklaud, in the county of Plymouth and State of Massachusetts, and HENRIE D. STONE,

of Massachusetts, have invented certain Improvements in Heel-Trimming Machines, of which the following is a specification.

'This inventlon relates to heel-trimming machines in which the heel is rotated against a shaving-knife, which is automatically tipped as the heel rotates to keep it at the proper angle of inclination relatively to the heel, as shown in Letters Patent of the United States for heel-trimmer, issued to M. A. Tyler, September 27, 1881, No. 247,714.

The object of the present invention is to provide certain improvements relating to the means for guiding and controlling the trimthing-knife and the pivoted table supporting the same, whereby the operation is made more certain and positive than the operation of the machine describedin the patent above referred to.

To this end ourinvention consists in theimprovements which we will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents an end elevation of a trimming-machine embodying our improvements. Fig. 2 represents a top view of that portion of the machine to which our improvements relate, the knife-holding stock being removed. Fig. 3 represents a section on line .00 00, Fig. 2, the knife-stock being in place. Fig. at represents a plan view of the knife-holding stock and a portion of the jack. Fig. 5 represents an edge view of the knife-holding stock. Fig. 6 represents a section on line 3 3 Fig. 4. Fig. 7 represents a perspective view of that portion of the machine in which our improvements are embodied. Figs. 8, 9, 10, l1, and 12 represent perspective views of parts detached. Fig.13 represents a plan view, showing a modification. Fig. 14 represents a side view of the portion of the jack that is shown in Fig. 13.

The same letters of reference indicate the same parts in all the figures.

of Boston, in the county of Suffolk and State" (No model.)

In carrying out our invention we provide a supporting-frame, A, in which is journaled a jack, B, adapted to hold a heel for the action of the shaving-knife, said frame and jack being substantially like the frame and jack shown in the above-named Letters Patent, to which reference is made for a fuller description.

0 represents the knifecarrying stock, having the shaving-knife D; and E represents the knilestock-supporting table, having a vertical flange, E, which is pivoted at F to a support, hereinafter described, so as to swing in a vertical plane at right angles to the axis of the jack. The support to which the flange of the table E is pivoted is a slide, G, adapted to move in dovetail guides on ablock, H, toward 6 and from the axis of the jack. The flange of the table E is provided with adjustable slides I I, carrying on their outer ends rollers J J, which enter a cam-groove, K, formed in a flap ge,

L, rigidly attached to the jack. The camgroove K takes the place of the heel-seat guide described in the above-named patent, said groove having the form of the top of a heel, but considerably larger.

It will be seen that when thejack is rotated the cam-groove embracing the rollers J J governs the inclination of the table E, and therefore holds the knife at the proper angle of inclination to the heel, the slide Gr permitting the pivoted table to, move toward and from 8 the axis of the jack, as required by the rotation of the jack, while the pivot of the table enables it to swing vertically. The block H, in which the slide G moves, is adapted to move in vertical dovetail guides in a standard, M, which is rigidly attached to the frame of the machine.

The initial inclination of the table relatively to thejack can be changed by raising or low ering the block H, which is effected by rotato ing a rod, N, journaled in a lag on the stand- .ard M, and having a threaded portion passing through a nut, O, projecting from the block H through aslot in the standard M. By means of the rod and nut the block H is adjusted ver- 5 tically, and positively held at any position to to which it may be adjusted. By the employment of the'cam-groove K, slide G, and standard M we are enabled to operate the tablepositively and support it firmly, obviating certain objections that have arisen to the operation of parts of the construction shown in the abovenamed patent-via, the heel-seat guide, the rollers bearing on the exterior of said guide, and the swinging weighted arm holding the rollers with a yielding pressure against the heel-seat guide-said parts operating less positively and satisfactorily than is desirable.

The knife-carrying stock 0 and its knife are constructed substantially as shown in the former patent, and rest upon the table E, so as to partake of its tipping movements; but the stock, instead of resting loosely on the table and being capable of sliding freely thereon in any direction, as in the former patent, is ca pable only of movementin two directions-4%., first, free movement by the operator in a direction substantially at right angles with the axis of the jack, to present the knife to and withdrawit from the heel P; and,secondly,an automatic lateral movement in a direction substantially parallel with the axis of the jack, to vary the inclination or fullness of the trimmed heel, or, in other words, make the inclination of the heel from top to bottom greater at the rear than at the sides. This stock 0 is enabled to have the first-named movement by being secured to a slide, Q, which is fitted upon a dovetail guide, It, arranged at right angles to the axis of the jack and supported by the table E. The operator, by grasping the handle of the stock, can move the stock and the slide Q back and forth freely toward and from the heel. The second or lateral movement of the stock is effected by making the stock laterally movable on the table E-that is, in a direction substantially parallel with the axis of the jack, providing the stock with a projection, U, which is about on a level with the cutting-edge of the knife, and providing the jack with a guidegroove, 1t, formed in a flange or collar on the jack, which flange may be either the patternblock on which the heel bears or a separate piece shaped like said block, said groove having a lateral curvature, It, at the portion corresponding to the rear portion of the heel, and receiving the projection U. hen the jack rotates the curvature R reaches the projection U just as the knife is commencing to trim the curved rear portion oftheheel. Said curvature, acting on the projection U, moves the latter with the stock laterally in the direction of the arrow in Fig. 4 until the center of the back of the heel is reached by the knife, and then in the opposite direction until the projection reaches the straight portion of the groove. The relation of the curved knife to the heel is so changed by the described lateral movement that the rear portion of the heel is given a greater inclination than the sides.

The lateral movability of. the stock is preferably effected by adapting the guide R (see Fig. 12,) on which the stock moves toward and from the jack, to move in a direction parallel with the axis of the jack by means ofguides V "heel in order to insure good work.

V in the table E. (See Fig. 10.) In this case the stock is rigidly attached to the slide Q, and the lateral movement is efl'ected by the movement ofthe guide R carrying with it the slide Q and the stock. Ifdesired, however, the guide B may be rigidly attached to the table E, so that the slide Q can move only toward and from the jack. In this case the lateral movement of the stock will be effected by pivoting it to the slide Q, so that it can turn freely, the lateral curvature of the guide-groove causing the stock to turn on its pivot and give the knife the required movement to increase the inclination at the rear of the heel.

It will be observed that by the described improvements relating to the movements of the stock on it s table the operation of the knife is made positive and uniform, and is not dependent on the care of the operator to such an extentas in the former patent, the operator having only to enter the projection U into the guide-groove and press the stock toward the When the guide R ofthe stock-supporting slideQ is made laterally movable the stock is adjustably attached to its slide Q, so that it can be set in diti'erent positions thereon and caused to trim the heel with any desired inclination from top to bottom. This adjustable attachment is effected by pivoting the stock to the slide Q at 2, near the knife end, and securing it to the stock at a point near the other end by a screw, 3, passing through a curved slot, 4. By loosening the screw 3 the stock can be turned in either direction as far as the slot 4 will allow, and by tightening the screw the stock will be held in any position to which it may be adjusted. When the guide R is made laterally movable the projection U may be attached to the slide B on which the guide It is located, as shown in Fig. 13, instead of to the stock 0.

We claim- 1. In a heel-trimmer, the combination, with the rotaryjack and the pivoted knife-stock supporting table E, provided with rollers J, of the cam-groove K on the jack, receiving the rollers J, and the block Gr, adapted to slide in guides toward and from the axis of the jack, and supporting the pivot of the table, said grooved cam and sliding block moving the table positively, as set forth.

2. In a heel-trimmer, the combination of the rotary jack having the guide-groove It, curved laterally at R, the pivoted table or support E, guided by means substantially as described to give the trimming-knife its proper inclinations, and the knife-carrying stock (3, supported by said table and adapted to be moved laterally thereon by the curve B of the guide-groove, whereby the fullness or inclination of the heel at its rear portion is automatically increased, as set forth.

3. The combination of the jack having the curved gr1itle-grooveR,the pivoted table,guided by means substantially as described to give the trim ming-knife its proper inclinations, the k nife-carrying stockO,secured rigidly to a slide,

Q, which is guided so as to move toward and from the axis of the jack, and a guide, R ,supporting the slide Q, and guided to move in a line substantially parallel with the axis of the jack, the stool: being thus allowed to move only in two directions, as set forth.

4. The combination of thejack, the pivoted table, guided by means substantially as described to give the trimming-knife its proper inclinations, the guide R guided on said table so as to move in a line substantially parallel with the axis ofthejaok, the slide Q, guided on the guide R so as to move to ward and from the axis of the jack, and the knife-carrying stock, pivoted to the slide Q, so that it can be turned thereon to vary its position, and provided with means for positively holding the stock upon the slide in any position to which it may be adjusted, as set forth.

5. The combination ofthe jack, the fixed standard M, having vertical guides, the slide H, movable vertically in said guides, the slide G, movable toward and from the axis of the jack, and the knife-supporting table pivoted to the slide G, as set forth.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, this 15th day of November, A. I). 1881.

MERRILL A. TYLER. HENRIE D. STONE. Witnesses:

(J. F. BROWN, A. L. WHITE. 

